| 摘要 |
A charge pump circuit for boosting a supply voltage has two bipolar transistors instead of MOS transistors for obtaining a large current drivability without enlargement in the size of the circuit. One of the bipolar transistors replenishes charge to an internal charge-up node from a high potential source line and the other of the bipolar transistors supply output current to a load. The latter of the bipolar transistors may be replaced by a resistor and a plurality of the charge pump circuits may be cascaded for obtaining a higher boosting function of potential and a large current drivability.
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